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mailmail9114
mailmail9114
Associate III
August 24, 2016
Question

STM32 F7 HAL_FLASH_Program() on sector 0

  • August 24, 2016
  • 5 replies
  • 1259 views
Posted on August 24, 2016 at 11:20

hi,

ive problems to write some flash areas.

using HAL_FLASH_Program() at higher sectors is working correctly. but if i want to

write  at the end of flash sector 0 it doesnt work. the value value is still 0xFFFF FFFF after writing. the program code is only using about the first 50% of sector 0.

i checked the  FLASH_OPTCR register  nWRP[7:0] bits - all value 1

HAL_FLASH_Unlock(); is also done before writing to flash.

thanks for help

    This topic has been closed for replies.

    5 replies

    slimen
    slimen
    Visitor II
    August 24, 2016
    Posted on August 24, 2016 at 13:15

    Hi,

    May be you can check if bootloader is used for section 0.

    Regards

    mailmail9114
    mailmail9114Author
    Associate III
    August 24, 2016
    Posted on August 24, 2016 at 14:34

    Hi,

    i dont use any bootloader :

    MEMORY

    {

    FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 1024K

    RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 320K

    }

    regards

    mailmail9114
    mailmail9114Author
    Associate III
    August 30, 2016
    Posted on August 30, 2016 at 15:25

    any ideas?

    thanks!

    waclawek.jan
    waclawek.jan
    Super User
    August 30, 2016
    Posted on August 30, 2016 at 15:34

    Without attempting to gain real understanding: caching issue?

    JW
    mailmail9114
    mailmail9114Author
    Associate III
    September 6, 2016
    Posted on September 06, 2016 at 09:36

     Hi,

    Problem was caused by  Segger j-link .

    Debugging with ST Link works as excepted.

    regards

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